lfn
serial
ticket/834-toolchain-update
topic/msim-upgrade
topic/simplify-dev-export
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Last change
on this file since 1558d85 was f66c203d, checked in by Martin Decky <martin@…>, 13 years ago |
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explicitly load default BIOS IDT for real-mode VESA BIOS access (GRUB 2.00 setups an empty IDT for bootstrap)
always use an empty IDT during bootstrap (for consistency)
make sure the interrupts are disabled during bootstrap
make sure correct GDT is set after returning from VESA BIOS
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Property mode
set to
100644
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File size:
292 bytes
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| Line | |
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| 1 | .code32
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| 2 | vesa_init_protected:
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| 3 | cli
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| 4 | cld
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| 5 |
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| 6 | /* Initialize stack pointer */
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| 7 | movl $START_STACK, %esp
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| 8 |
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| 9 | /* Kernel data + stack */
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| 10 | movw $GDT_SELECTOR(KDATA_DES), %cx
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| 11 | movw %cx, %es
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| 12 | movw %cx, %fs
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| 13 | movw %cx, %gs
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| 14 | movw %cx, %ds
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| 15 | movw %cx, %ss
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| 16 |
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| 17 | jmpl $GDT_SELECTOR(KTEXT_DES), $vesa_meeting_point
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